CN101599880A - Embedded mine data substation - Google Patents
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Abstract
A kind of embedded mine data substation of the present invention is downhole data collection and the control device that uses in the Safety of Coal Mine Production supervisory control system.This substation is made up of intrinsic safety electric source, ARM controller mainboard, CAN bus communication plate, display driver plate, LCDs and explosion-resistant enclosure.Real time data by descending RS485 bus is gathered in real time the various analog quantitys that are articulated on this mine data substation, switching value, cumulant transducer shows in real time by LCDs; Change according to real time data, according to the control logic of setting automatically to the output equipment that the is articulated control of cutting off the power supply; By up CAN bus interface with transfer of data to the ground monitoring main frame, carry out networked control.This substation is applicable in the subsurface environment of colliery to have intelligent alarm outage control and autonomous networking function, is the important component part in the dereliction formula Safety of Coal Mine Production supervisory control system, can in time reduce the generation probability of mine safety accidents.
Description
Technical field
The present invention relates to information technology and automatic field technical field of information processing, the function that relates to downhole monitoring data substation in the real-time monitoring and controlling system of coal mine downhole safety production constitutes, be the real-time purpose monitoring device that utilizes the embedded mine data substation of embedded software and hardware technology composition, formed the mining watch-dog that is applicable to the colliery subsurface environment with intelligent alarm outage control and autonomous networking function.
Background technology
Energy industry for national national economy grow continuously and fast and national defense construction all be vital basic activity.Coal resources are the main Energy Mix parts of China, and domestic coal production industry also is one of important pillar industry of country, and the safe coal manufacturing monitoring system is to ensure indispensable part in the Coal Production development process.China's coal-mine safety in production automatic monitoring supervisory control system is started in the eighties, does not almost have big technological progress over more than 20 year.Existing system all is collecting and distributing pattern, and speed is slow, capacity is low, software and hardware is incompatible between poor reliability, no network function, system, cost is high, only data monitoring does not have the multimedia monitoring function.The backwardness of technical conditions also is a very important factor that causes domestic mine disaster in recent years to take place frequently.Traditional Safety of Coal Mine Production supervisory control system all adopts the frame mode of master-slave mode to carry out fire damp, the isoparametric monitoring of air quantity and early warning control, its mode of operation all is to send acquisition by monitoring central station to underground substation, underground substation is uploaded to monitoring central station after collecting data, after by central station data being carried out analyzing and processing, make the control decision of underground equipment outage again, be issued to underground substation and come executable operations by carrying out substation.Whole monitor procedure is made of a plurality of communication links, and the control procedure redundancy is loaded down with trivial details, adds the restriction of substation software and hardware technology condition, has formed the time lag of growing the power operation from noting abnormalities, the serious hidden danger that has caused security incident to take place.The downhole monitoring substation only plays the effect of a data collection and communication intermediary in this system, do not have independence and intelligent saying, and control operation depends critically upon communication process, in case the communication channel fault, whole monitoring system paralyses, and loses the effect of safety production monitoring.Therefore, be necessary to develop a kind of mine data substation that can realize intelligence outage control and autonomous networking function, constitute the Regional Control Center under the coal mine, realize the data communication method of dereliction formula, improve the promptness of Safety of Coal Mine Production supervisory control system to abnormality processing, the reduction system reduces the probability that the Safety of Coal Mine Production accident takes place to the dependence of communication channel.
Summary of the invention
The objective of the invention is to utilize embedded software and hardware technology of ARM and intrinsic safe explosion-proof technology that a kind of embedded mine data substation is provided, in the Safety of Coal Mine Production supervisory control system, realize dereliction formula communication modes, form coal mine lower area intelligent management, realize the timely warning and the power down process of down-hole abnormal conditions, improve the promptness and the reliability of Safety of Coal Mine Production supervisory control system, reduce the probability of happening of Safety of Coal Mine Production accident, ensure colliery reasonable resources exploitation and use.
For achieving the above object, technical solution of the present invention is:
A kind of embedded mine data substation comprises intrinsic safety electric source, ARM controller mainboard, CAN bus communication plate, display driver plate, LCDs and explosion-resistant enclosure; Wherein, explosion-resistant enclosure is made of explosion-proof chamber and intrinsic safety chamber, intrinsic safety electric source is installed in the explosion-proof chamber, ARM controller mainboard, CAN bus communication plate, display driver plate and LCDs all adopt the design of essential safe type circuit, adopt the bus type plug-in unit to fold each other and be plugged together, be installed in the intrinsic safety chamber; Be electrically connected by the mining cable that has sealing rubber ring between explosion-proof chamber and the intrinsic safety chamber;
ARM controller mainboard contains arm processor, power management part, real-time time part, interior nonresident portion and USB, RS232, Ethernet various communication interfaces; CAN bus communication plate contains CAN bus communication interface, as the uplink communication interface of mine data substation; The display driver plate contains address selection switch, data storage, liquid crystal display screen driving interface and RS485 communication interface, and wherein the RS485 interface is as the downgoing communication interface of mine data substation;
Intrinsic safety electric source contains the alternating current input interface, transformer, power converting circuit, current foldback circuit, the intrinsic safety electric source output interface, battery charging and discharging circuit and rechargeable battery, the external communication electricity is linked on the alternating current input interface by the mining cable of band sealing rubber ring, insert the input of transformer through fuse, the transformer output is connected with power converting circuit, after the overcurrent protective circuit, direct voltage outputed to the intrinsic safety electric source output port, be other circuit board power supplies of mine data substation, rechargeable battery provides standby ups power by charge-discharge circuit for intrinsic safety electric source;
Mine data substation links to each other by up CAN bus communication Interface and Communication gateway and other mine data substations, forms the bus type communication system; Link to each other by descending RS485 bus communication Interface ﹠ Bus formula transducer, actuator or signal converter, signal converter is realized traditional analog quantity sensor, the conversion of signals of actuator between the RS485 bus.
Described embedded mine data substation, its described arm processor is the ARM9 processor.
Described embedded mine data substation, store the transducer that articulated and the dependent thresholds and the control logic of actuator in the data storage that the display driver plate of its described mine data substation is contained, gather the numerical value or the state of each transducer in real time, compare with the threshold value of storage, judge whether to control automatically, and the actuator of respective channel is controlled output according to relevant control logic; Allow the mutual control between the mine data substation in the control logic, realize strange land control by the CAN bus.
Described embedded mine data substation, the input voltage of its described intrinsic safety electric source are the 380V alternating current, and its output voltage is 5V, and output current is≤2A.
Described embedded mine data substation, its described CAN bus communication Interface and Communication gateway and other embedded mine data substations connect, and communication baud rate is 5k～40kbps, maximum capacity≤100 of inserting mine data substation, communication distance is≤2km.
Described embedded mine data substation, its described RS485 communication interface is connected with a plurality of transducers, actuator or signal converter, and communication baud rate is 1200～115200bps, and communication distance is≤1km.
Described embedded mine data substation, its described LCDs is monochromatic dot matrix display, resolution is the 240*128 pixel.
Described embedded mine data substation, the capacity of the data storage that the display driver plate of its described mine data substation is contained comprises channel number, acquisition time, data value, unit at least 20 ten thousand sensing datas, every data.
Described embedded mine data substation, its described address selection switch is made up of two 10 BDC sign indicating number dial switch, sets the ID address of mine data substation in the CAN bus communication system by manually stirring.
Described embedded mine data substation, the rechargeable battery of its described intrinsic safety electric source are the 12V/7.2AH storage battery, and intrinsic safety electric source is by built-in UPS diverter switch control accumulator cell charging and discharging.
The major advantage of the embedded mine data substation that the present invention proposes is as follows: utilize the mine data substation based on the embedded system technology development of arm processor, its data acquisition process ability is stronger, can handle respectively the data of No. 64 transducers simultaneously; Utilize CAN bus communication technology technology to realize real time data communication between mine data substation and Communication Gateway, the mine data substation having improved communication speed and efficiency of transmission; Adopt the version of dereliction formula, make monitoring central station and mine data substation have relative independence, mine data substation is no longer merely the simple device of a data collection and transfer, and become an intelligent cell that downhole sensor, actuator are carried out regional management, have the function of autonomous networking and intelligent management; Adopt the dot lcd screen to show, can show information such as more sensor information, substation communication state, power supply power supply state, be convenient in time grasp the working condition of each unit of supervisory control system; The UPS function of supplying power of system can be kept system's continuous firing 6 hours under the alternating current powering-off state, carries out remote alarms to Surveillance center simultaneously, has improved the promptness of system maintenance.
Description of drawings
Fig. 1 is the structured flowchart of embedded mine data substation of the present invention;
Fig. 2 is the hardware capability circuit connection diagram of embedded mine data substation of the present invention;
System's connection diagram that Fig. 3 uses in the Safety of Coal Mine Production supervisory control system for embedded mine data substation of the present invention.
Embodiment
A kind of embedded mine data substation based on arm processor of the present invention is downhole data collection and the control device that uses in the Safety of Coal Mine Production supervisory control system.This device is made up of intrinsic safety electric source, ARM controller mainboard, CAN bus communication plate, display driver plate, LCDs and explosion-resistant enclosure, as shown in Figure 1.Wherein explosion-resistant enclosure is made of explosion-proof chamber and intrinsic safety chamber, intrinsic safety electric source is installed in the explosion-proof chamber, ARM controller mainboard, CAN bus communication plate, display driver plate and LCDs all adopt the design of essential safe type circuit, all designed the system bus interface of 104 cores on every circuit board according to identical bus standard, adopt the bus type plug-in unit to fold each other and be plugged together, be installed in the intrinsic safety chamber; Be electrically connected by the mining cable that has sealing rubber ring between explosion-proof chamber and the intrinsic safety chamber.This mine data substation is a kind of Flameproof intrinsically safe mining equipment, the alternating current input and the power circuit that can produce electric spark partly are installed in the explosion-proof chamber, reach the flame proof requirement, seal is good, can not arrive the cavity outside even produce electric spark, assurance can not ignited imflammable gas and be blasted yet; Circuit part in the output of intrinsic safety electric source and the intrinsic safety chamber all adopts the essential safe type circuit, and self can not produce electric spark, has guaranteed the safe handling of this equipment under coal mine.
Fig. 2 is the hardware capability circuit connection diagram of this mine data substation, mainly is made up of intrinsic safety electric source and ARM control circuit two parts.Intrinsic safety electric source is the electric unit that provides essential safe type voltage to supply with for mine data substation; mainly by the alternating current input interface; transformer; power converting circuit; current foldback circuit; battery charging and discharging circuit (the each several part circuit does not illustrate separately in the drawings); rechargeable battery and intrinsic safety electric source output interface are formed; the external communication electricity is linked on the alternating current input interface by the mining cable of band sealing rubber ring; insert the input of transformer through fuse; the transformer output is connected with power converting circuit; after the overcurrent protective circuit, direct voltage outputed to the intrinsic safety electric source output port; be other circuit board power supplies of mine data substation, rechargeable battery provides standby ups power by charge-discharge circuit for intrinsic safety electric source.The ARM control circuit by arm processor as its core, the peripheral electric pressure translation circuit that connects, program storage (Flash), internal memory (SDRAM), and expand system bus, constitute the bus interface of 104 cores together with the supply voltage of various grades, be connected with other circuit boards, on system bus interface, connect the RS485 conversion chip and constitute descending RS485 bus communication interface, connect the level drive circuit and articulate LCDs, connect the data storage of the Flash memory of 2MB as mine data substation, connect real-time timepiece chip to get Date and the time, connect level transferring chip, the CAN controller chip, optocoupler isolator spare, CAN bus transceiver chip and isolation voltage conversion module (DC/DC module) constitute CAN bus communication interface up and down.
The operation principle of Fig. 2 is as follows: the 380V alternating current is transformed to the 19V alternating current through transformer, voltage conversion circuit by intrinsic safety electric source carries out rectification, filtering, voltage stabilizing, produce the 5V direct voltage, use current foldback circuit that output current is measured at intrinsic safety voltage output end mouth simultaneously, in case meeting or exceeding, output current sets maximum 2A, the feedback loop that protective circuit constitutes is exported shutoff voltage, and making the intrinsic safety output voltage is 0; Front end in the output of intrinsic safety voltage uses battery charge/discharge control circuit simultaneously, and the electric switching between control alternating voltage and the 12V/7.2AH storage battery makes this intrinsic safety electric source have the UPS function of supplying power.After 5V voltage exports the intrinsic safety chamber to, be transformed to 3.3V and two kinds of electric pressures of 1.8V, be the arm processor chip power supply by the voltage transitions chip; The arm processor back program code read from the Flash memory that powers on carries out executable operations in SDRAM, realize the running software of embedded system.Its major control is operating as: the real time data of the transducer on this mine data substation that is articulated in by the collection of RS485 downgoing communication interface according to the sampling interval of setting, show in real time through delivering to LCDs by the liquid crystal display screen display interface after the calculation process, and read the real-time clock content, pack the data to set form, be transferred to monitoring central station by CAN uplink communication interface according to the interval of setting of uploading; Simultaneously according to the sensing data and the state that collect, compare with the dependent thresholds that is stored in the data storage, judge whether to carry out the Autonomous Control operation, then pass through the RS485 bus to the associated actuator transmitting control commands as the needs execution according to the control logic of storage, or pass through the CAN bus to other mine data substations transmission strange land control commands, realize the timely processing and the control of down-hole ANOMALOUS VARIATIONS.
System's connection diagram that Fig. 3 uses in the Safety of Coal Mine Production supervisory control system for this mine data substation.System mainly is made of ground list server, Communication Gateway, mine data substation, transducer, actuator and signal converter for mining.The ground list server is connected by netting twine with the Communication Gateway on ground, connects by optical cable between each Communication Gateway, constitutes the slack looped network.Each Communication Gateway has the CAN bus interface, is connected by pair cable with mine data substation, forms the CAN communication bus.Mine data substation is connected with transducer, the actuator of bus type by row bus under the RS485, and for analog signal sensors and actuator,, is connected with mine data substation as conversion intermediary by signal converter for mining.CAN bus heap(ed) capacity articulates 100 mine data substations, baud rate is selected 20kbps for use, and maximum distance 2km, RS485 bus heap(ed) capacity articulate 64 transducers, actuator (or articulate by signal converter for mining), maximum distance is 1km, and baud rate is selected 9600bps for use.
The operation principle of Fig. 3 is as follows: mine data substation is gathered the data and the state of each transducer in real time by the RS485 bus, show in real time by liquid crystal display screen after treatment, and independently associated actuator is carried out control operation according to control logic, and passing through the CAN bus transfer to Communication Gateway after real time data and the control information packing, Communication Gateway is separated valid data from the CAN agreement, and use ICP/IP protocol to the data processing of packing, and be delivered to the ground list server by optical fiber ring network, realize real-time monitoring to downhole parameters.Local list server need be made amendment and when controlling to the parameter of underground equipment and operating state, utilize ICP/IP protocol to be passed to corresponding Communication Gateway data by the ground list server by optical fiber ring network, go out effective order by this Communication Gateway sub-argument, use the CAN bus protocol order to be passed to the mine data substation of appointment, carry out the execution of order by mine data substation, thereby realize the Long-distance Control of colliery underground equipment.
The mine data substation that the present invention adopts embedded software and hardware technology of ARM and bus type mechanics of communication to form, its disposal ability is strong, have certain Autonomous Control and intelligent management function, it is simple to have solved in traditional Safety of Coal Mine Production supervisory control system the substation function, depends critically upon the problem of monitoring central station.Mine data substation has formed a plurality of relatively independent subsystems by CAN bus and RS485 bus, can realize zonal parameter acquisition and control in real time, also can be by the dereliction formula communication between the mine data substation, realize strange land outage controlled function, the independence and the real-time of system have been improved greatly, many drawbacks that the master-slave mode inquiry mode brings in traditional coal mine safety monitoring system have been solved, even its autonomous networking function makes under the situation of the damage of communication major trunk roads or Surveillance center's station failure, mine data substation still can in time carry out timely processing controls to unexpected abnormality, reduce the probability that down-hole burst disaster accident takes place, ensured safety of coal mines reasonably production and exploitation.
Claims (10)
1. an embedded mine data substation is characterized in that: comprise intrinsic safety electric source, ARM controller mainboard, CAN bus communication plate, display driver plate, LCDs and explosion-resistant enclosure; Wherein, explosion-resistant enclosure is made of explosion-proof chamber and intrinsic safety chamber, intrinsic safety electric source is installed in the explosion-proof chamber, ARM controller mainboard, CAN bus communication plate, display driver plate and LCDs all adopt the design of essential safe type circuit, adopt the bus type plug-in unit to fold each other and be plugged together, be installed in the intrinsic safety chamber; Be electrically connected by the mining cable that has sealing rubber ring between explosion-proof chamber and the intrinsic safety chamber;
ARM controller mainboard contains arm processor, power management part, real-time time part, interior nonresident portion and USB, RS232, Ethernet various communication interfaces; CAN bus communication plate contains CAN bus communication interface, as the uplink communication interface of mine data substation; The display driver plate contains address selection switch, data storage, liquid crystal display screen driving interface and RS485 communication interface, and wherein the RS485 interface is as the downgoing communication interface of mine data substation;
Intrinsic safety electric source contains the alternating current input interface, transformer, power converting circuit, current foldback circuit, the intrinsic safety electric source output interface, battery charging and discharging circuit and rechargeable battery, the external communication electricity is linked on the alternating current input interface by the mining cable of band sealing rubber ring, insert the input of transformer through fuse, the transformer output is connected with power converting circuit, after the overcurrent protective circuit, direct voltage outputed to the intrinsic safety electric source output port, be other circuit board power supplies of mine data substation, rechargeable battery provides standby ups power by charge-discharge circuit for intrinsic safety electric source;
Mine data substation links to each other by up CAN bus communication Interface and Communication gateway and other mine data substations, forms the bus type communication system; Link to each other by descending RS485 bus communication Interface ﹠ Bus formula transducer, actuator or signal converter, signal converter is realized traditional analog quantity sensor, the conversion of signals of actuator between the RS485 bus.
2. embedded mine data substation as claimed in claim 1 is characterized in that: described arm processor is the ARM9 processor.
3. embedded mine data substation as claimed in claim 1, it is characterized in that: store the transducer that articulated and the dependent thresholds and the control logic of actuator in the data storage that the display driver plate of described mine data substation is contained, gather the numerical value or the state of each transducer in real time, compare with the threshold value of storage, judge whether to control automatically, and the actuator of respective channel is controlled output according to relevant control logic; Allow the mutual control between the mine data substation in the control logic, realize strange land control by the CAN bus.
4. embedded mine data substation as claimed in claim 1 is characterized in that: the input voltage of described intrinsic safety electric source is the 380V alternating current, and its output voltage is 5V, and output current is≤2A.
5. embedded mine data substation as claimed in claim 1, it is characterized in that: described CAN bus communication Interface and Communication gateway and other embedded mine data substations connect, communication baud rate is 5k～40kbps, maximum capacity≤100 of inserting mine data substation, communication distance is≤2km.
6. embedded mine data substation as claimed in claim 1 is characterized in that: described RS485 communication interface is connected with a plurality of transducers, actuator or signal converter, and communication baud rate is 1200～115200bps, and communication distance is≤1km.
7. embedded mine data substation as claimed in claim 1 is characterized in that: described LCDs is monochromatic dot matrix display, and resolution is the 240*128 pixel.
8. as claim 1 or 3 described embedded mine data substations, it is characterized in that: the capacity of the data storage that the display driver plate of described mine data substation is contained comprises channel number, acquisition time, data value, unit at least 20 ten thousand sensing datas, every data.
9. embedded mine data substation as claimed in claim 1 is characterized in that: described address selection switch is made up of two 10 BDC sign indicating number dial switch, sets the ID address of mine data substation in the CAN bus communication system by manually stirring.
10. as claim 1 or 3 described embedded mine data substations, it is characterized in that: the rechargeable battery of described intrinsic safety electric source is the 12V/7.2AH storage battery, and intrinsic safety electric source is by built-in UPS diverter switch control accumulator cell charging and discharging.
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| CN101883036A (en) * | 2010-06-25 | 2010-11-10 | 上海铁大电信设备有限公司 | Method for converting multi-path RS485 bus into CAN (Controller Area Network) bus in the manner of self-adapting |
| CN101901584A (en) * | 2010-07-15 | 2010-12-01 | 宿州科力电器有限公司 | Mine explosion-suppression and intrinsic safety type monitor display |
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